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ConcurrentModificationException in the GameRoomManager #201

@SKoschnicke

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@SKoschnicke

Ein Team ist beim Trainieren ihres Clients auf einen Fehler im Server gestossen. Der Server beendet sich mit folgender Fehlermeldung:

18:13:54 ERROR sc.networking.clients.XStreamClient - Unknown Communication Error
java.util.ConcurrentModificationException: null
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1442)
        at java.util.HashMap$ValueIterator.next(HashMap.java:1471)
        at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042)
        at sc.server.gaming.GameRoomManager.joinOrCreateGame(GameRoomManager.java:156)
        at sc.server.Lobby.onRequest(Lobby.kt:65)
        at sc.server.network.Client.notifyOnPacket(Client.java:93)
        at sc.server.network.Client.onObject(Client.java:230)
        at sc.networking.clients.XStreamClient.receiveThread(XStreamClient.java:115)
        at sc.networking.clients.XStreamClient$1.run(XStreamClient.java:77)
        at java.lang.Thread.run(Thread.java:748)

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